Vaccination to promote the health equilibrium and diseases prevention
The swine genetic progress enables farmers to highly increase their piglets’ production. The size of the litters has increased but there are big differences in term of weight and size of the piglets inside a litter.
Weak piglets will not grow as fast and as much as big ones, even though belonging they have the same mother.
In Korea, the PCV2 vaccination is made in almost 100% of the farms. In spite of this vaccination, the PCV2 still causes important economic losses due to the lower weight daily gain and delayed time tomarket.
The main genotype which has been identified in the PCV2 positive tested cases by the Pr Kim Won 11 team is the genotype d, involved in about 90% of positive cases.
Thanks to laboratory and field studies, Pr Kim Won II thinks that there is possibly an interaction between maternally derived antibodies and piglets’ vaccination, based on seroconversion data and subsequent pigs protection.
PCV2d is now the predominant genotype in Korea and has been previously isolated in PCVAD cases in vaccinated herds.
Objective of these studies were to assess safety and efficacy of a newly developed PCV2 vaccine based on the PCV2d genotype now predominant in many regions.
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